 Cost
comparison of low-field (0.23 T) MRI-guided laser ablation and
surgery in the treatment of osteoid osteoma
Ronkainen, J., et al. - The cost of MRI-guided laser ablation of
osteoid osteoma was higher than the cost of surgical excision of a
superficial osteoma but considerably lower than the cost of
excision of a deeply located osteoma where metallic fixation was
needed. When the number and mean cost of sick days or days of
restricted weight bearing were also included, the cost of
MRI-guided laser ablation was lower than the costs of either
superficial or deep excision...
Computed
Tomography of Suspected Scaphoid Fractures
Lauren Adey MD, et al. - Conclusions: Computed tomography should
be used with caution for triage of nondisplaced scaphoid fractures
because false-positive results occur, perhaps from
misinterpretation of vascular foraminae or other normal lines in
the scaphoid. Given the relative infrequency of true fractures
among patients with suspected scaphoid fractures, CT is better for
ruling out a fracture than for ruling one in...
Use
of computed tomography?single-photon emission computed tomography
fusion for diagnosing painful facet arthropathy: technical note
Matthew Mcdonald, M.D., et al. - Facet disease is believed to play
a major role in axial low-back pain and may prove in the future to
be an important indication for posterior dynamic stabilization.
However, the lack of good diagnostic tests and imaging methods for
identifying this condition have made this entity obscure. Although
single-photon emission computed tomography (SPECT) imaging is a
highly sensitive and specific test, the images frequently lack
adequate resolution, whereas computed tomography (CT) provides
excellent resolution but lacks specificity...
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The
relationship between the extensor tendon enthesis and the nail in
distal interphalangeal joint disease in psoriatic arthritis?a
high-resolution MRI and histological study
A. L. Tan, et al. - Conclusion: The study suggests that the
extended nature of the enthesis organ associated with the DIP
joint may explain the diffuse nature of the inflammatory response
around the nail in PsA. Therefore the nail is as much an integral
part of the enthesis organ as it is of the skin, which has
implications for a better understanding of the disease...
MR
imaging in sports-related glenohumeral instability
Woertler, Klaus, et al. - Sports-related shoulder pain and
injuries represent a common problem. In this context, glenohumeral
instability is currently believed to play a central role either as
a recognized or as an unrecognized condition...This article
reviews the imaging criteria for the detection and classification
of instability-related injuries in athletes with special emphasis
on the influence of MR findings on therapeutic decisions...
FDG-PET
and CT patterns of bone metastases and their relationship to
previously administered anti-cancer therapy
Israel, Ora, et al. - The results of the present study indicate
that when imaging bone metastases, prior treatment can alter the
relationship between PET and CT findings. Most untreated bone
metastases are PET positive and lytic on CT, while in previously
treated patients most lesions are PET negative and blastic on CT.
PET and CT therefore appear to be complementary in the assessment
of bone metastases...
Diagnosis
of Femoral Neck Fractures in Patients with a Femoral Shaft
Fracture
Paul Tornetta, III, MD, et al. - An ipsilateral fracture of the
femoral neck is seen in association with 1% to 9% of femoral shaft
fractures, and 20% to 50% of these injuries are missed
initially...Conclusions: In the presence of a femoral shaft
fracture, evaluation of the femoral neck with fine-cut computed
tomography and dedicated internal rotation hip radiographs
significantly improves the ability to diagnose an associated
femoral neck fracture...
Back
Pain in Adolescents: Assessment With Integrated 18F-Fluoride
Positron-emission Tomography-Computed Tomography
Ovadia, Dror MD, et al. - The aim of the present study was to
assess the ability of a novel bone imaging technique to diagnose
accurately the cause for back pain as an isolated and presenting
complaint in adolescents...The 18F-fluoride PET-CT can detect
spinal lesions with high diagnostic accuracy in adolescents with
back pain...
Three-Dimensional
Computed Tomographic Scan of the External Third of the Clavicle
Geoffroy Nourissat M.D., et al. - The aims of this radiologic
study were to explore the anatomic aspect of the external third of
the clavicle and to determine anatomic elements that can be useful
for surgeons who perform surgery that involves this
area...Conclusions: Our study shows the great variability of the
anatomy of the external third of the clavicle...
Tumor-Like
Meniscal Cyst
Nikolaos Roidis M.D., Ph.D., et al. - The peculiarity of this
lesion was the tumor-like appearance: its large size, the progress
of symptoms, and the multilobulated, nonhomogenous signal on the
MRI scan. One year postoperatively, the patient is asymptomatic
and the MRI obtained at 6 months revealed no remnant of the fully
excised cyst...
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Three-dimensional
versus two-dimensional sonography of the temporomandibular joint in
comparison to MRI
Constantin A. Landesa, et al. - Conclusions: Acceptable was the overall
negative predictive value, as specificity and accuracy for joint
degeneration in 3D. 3D appears superior diagnosing disk dislocation in
closed mouth position as for overall joint degeneration. Sensitivity,
accuracy and positive predictive value will have to ameliorate with
future equipment of higher resolution in real-time 2D and 3D, if
sonographic screening shall be clinically applied prior to MRI...
Congenital
proximal radioulnar synostosis associated with bilateral hypoplasia of
the scaphoid bone, bilateral os lunatotriquetrum, and anomalies of the
carpometacarpal complex
Bernhard Glodny, et al. - We describe a unique case of bilateral os
lunatotriquetrum associated with bilateral hypoplasia of the scaphoid
bone. On both sides, the medial carpi were in a single row. The capitate
bone occupied the lunate position, whereas the lunatotriquetral bone was
displaced ulnarly and tilted. The capitate thus articulated with the
radius and metacarpal bones, consistent with carpal collapse. In
addition, there was congenital proximal radioulnar synostosis on the
left side...
Biology
and therapy of fibromyalgia. Functional magnetic resonance imaging
findings in fibromyalgia
David A Williams, et al. - This review focuses on studies that have
applied fMRI in an attempt to gain a better understanding of the
mechanisms involved in the processing of pain associated with
fibromyalgia. This article provides an overview of the nociceptive
system as it functions normally, reviews functional brain imaging
methods, and integrates the existing literature utilizing fMRI to study
central pain mechanisms in fibromyalgia...
Carpal
tunnel syndrome caused by volar dislocation of the lunate in a patient
with rheumatoid arthritis
Oka, Yoshinobu, et a. - Carpal tunnel syndrome was diagnosed, and carpal
tunnel release was performed. However, the symptoms recurred.
Three-dimensional computed tomography and magnetic resonance imaging
revealed volar dislocation of the lunate and synovitis around the distal
radioulnar joint, respectively. Resection of the lunate and the Sauvé-Kapandji
procedure were effective...
Postoperative
Evaluation of the Knee after Autologous Chondrocyte Implantation: What
Radiologists Need to Know
Yvonne Yiwan Ho, MB, BS, FRANZCR, et al. - MR imaging and arthroscopy
are complementary investigations in the follow-up of an autologous
chondrocyte implantation in the knee. The appearance of the knee after
autologous chondrocyte implantation varies among individuals and
according to the time-course of healing...
Prognosis
of 5-year Radiographic Erosions of the Wrist According to Early, Late,
and Persistent Wrist Swelling or Tenderness in Patients with Early
Rheumatoid Arthritis
Reijo Luukkainen, et al. - Conclusion: Wrist swelling during the first
year only is associated with less future wrist radiographic damage than
persistent swelling or swelling only during the followup. Our results
emphasize the value of early and continuous suppression of inflammatory
activity in early RA...
Digital
Radiographic Measurement of the Atlantodental Interval in Children
Douglas, Tania S. PhD, et al. - The atlantodental interval (ADI) is
assessed after trauma to the head and neck region to determine whether
the transverse ligament of the atlas is intact. Atlantodental interval
measurement from conventional screen-film radiographs is characterized
by the need for magnification correction and by low reliability...
Improved
wrist pannus volume measurement from contrast-enhanced MRI in rheumatoid
arthritis using shuffle transform
Emily Xanthopoulos, et al. - To develop and evaluate an improved
measurement of volume of enhancing pannus (VEP) in the hand in human
rheumatoid arthritis (RA)...Conclusion: Volume of enhancing pannus can
be measured reproducibly in the rheumatoid hand using 3D
contrast-enhanced MRI and shuffle transform...
Radiotherapy
in the management of recurrent synovial chondromatosis
Chong, et al. - Synovial chondromatosis is a rare, benign condition
characterized by the formation of multiple cartilaginous nodules that
are generally intra-articular and can lead to chronic pain and limit the
function of involved joints. We report on the novel use of radiotherapy
that was used to treat a 42-year-old man with rapid recurrences of
extensive synovial chondromatosis in the knee refractory to multiple
operations...
Increase
of bone volume by a nanosecond pulsed laser irradiation is caused by a
decreased osteoclast number and an activated osteoblasts
Tadashi Ninomiya, et al. - The biostimulatory effects of laser
irradiation focus not only in the field of soft tissue but also bone
formation. Studies have shown that the light of a nanosecond pulsed
laser which has a high peak power can produce stress waves in
tissue...These data reveal that the increased bone volume by nanosecond
pulsed laser irradiation causes an increase in osteoblast activity and a
decrease in osteoclast number...
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Isolated
Papillary Muscle Uptake on FDG PET/CT
Lin, Eugene C. MD - The papillary muscles have characteristic
locations on axial and coronal images. Papillary muscle uptake is
often seen in conjunction with myocardial uptake on F-18
fluorodeoxyglucose positron emission tomography/computed
tomography (FDG PET/CT). However, papillary muscle uptake can
occasionally be seen without myocardial uptake...
MRI
of the foot
Muhammad Ali, MBBS, et al. - This article reviews the use of
magnetic resonance imaging (MRI) in the evaluation of the foot,
including a discussion of bone and cartilage abnormalities, sinus
tarsi pathology, and the evaluation of the foot in hindfoot,
midfoot, and forefoot subsections. Compared with computed
tomography, MRI offers superior contrast resolution and exquisite
detail of soft tissue structures...
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Acute
Rupture of the Anterior Cruciate Ligament and Patellar Tendon in a
Collegiate Athlete
Lydia A. Futch P.T., et al. - In rare incidences of combined
ruptures of the ACL and patellar tendon, either the patellar
tendon ruptures or the associated ACL tear is often initially
missed...Magnetic resonance and radiographic imaging confirmed
conclusions from the on-field examination. The patient also
underwent safe early mobilization and weight bearing following
surgical repair...
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MRI
Findings in the Subchondral Bone Marrow: A Discussion of Conditions
Including Transient Osteoporosis, Transient Bone Marrow Edema Syndrome,
SONK, and Shifting Bone Marrow Edema of the Knee
Holly C. Gil, et al. - Bone marrow edema signal can be seen in many
settings ranging from trauma and arthritis to less common conditions
including transient osteoporosis, transient bone marrow edema syndrome,
true osteonecrosis, spontaneous osteonecrosis, and shifting bone marrow
edema...This article reviews the less frequently encountered and less
well understood entities and explores their potential pathophysiologies
and significance...
MR
Imaging of Groin Pain in the Athlete
Eoin C. Kavanagh, et al. - In this article we present the radiological
differential diagnosis of athletes presenting with groin pain. The
common mechanisms of injury, presenting symptoms, and imaging findings
for each of these entities are addressed...
Volumetric
evaluation of upper extremities in 250 healthy persons
Gebruers, N., et al. - We suggest that this technique can be used in
daily clinical practice for the evaluation of upper extremity oedema or
atrophy caused by various diseases as well as for volume monitoring.
Prediction formulas can be used to define abnormal swelling...
Focal
Asymmetric Longus Colli Uptake on FDG PET/CT
Lin, Eugene C. MD - Muscular uptake on F18-fluorodeoxyglucose positron
emission tomography/computed tomography (FDG PET/CT) examinations is
commonly seen and the typical patterns are well described. Muscular
uptake is usually easily differentiated from pathology by its symmetry
and location or by fusion with CT. An uncommon pattern of uptake in
which a focal asymmetric area of FDG uptake is seen in the longus colli
muscles is described...
A
Second Radiographic Skeletal Survey for Child Abuse Triggered by Bone
Scintigraphy Found Positive After the Initial Survey Was Called Negative
Williams, Gethin MBBS, PhD, et al. - A 6 month old, previously reported
as a "robust", healthy boy, presented with the mother reporting that
when she tried to change his diaper, she "heard a crack"...This second
skeletal survey noted a contralateral femoral subperiosteal reaction
which, together with a healing femoral classic metaphyseal lesion,
strongly suggested nonaccidental injury...
Adults
with Osteogenesis Imperfecta
Osteogenesis imperfecta is a heritable disorder caused by mutations in
the gene for type I collagen. The Sillence classification of
osteogenesis imperfecta (types I through IV) is based on clinical
characteristics. Whole-body images of adults with osteogenesis
imperfecta who were recruited for a clinical trial were acquired with
the use of dual-energy x-ray absorptiometry...
Color
and Duplex Doppler Sonography to Detect Sacroiliitis and Spinal
Inflammation in Ankylosing Spondylitis. Can This Method Reveal Response
to Anti-Tumor Necrosis Factor Therapy?
Ercument Unlu, et al. - To investigate the role of color and duplex
Doppler ultrasound (CDDUS) in the detection of sacroiliac (SI) and
spinal inflammation, as well as response to anti-tumor necrosis factor (TNF)
therapy in patients with ankylosing spondylitis (AS)...Conclusion: CDDUS
may be an alternative, less expensive, and easier method for detecting
inflammation secondary to increased SI and spinal vascularization and in
evaluating response to anti-TNF therapy in AS...
Visualization
of an Insect Bite on a Bone Scan
De Geeter, Frank MD, PhD - Bone scintigraphy with Tc-99m oxidronate in a
48-year-old woman showed an area of increased soft tissue activity
corresponding to an insect bite that the patient had incurred the day
before the scan...
Acute
knee trauma: role of ultrasound
Bonnefoy, Olivier, et al. - The purpose of this study was to determine
the diagnostic accuracy of high spatial resolution ultrasonography (US)
in the detection of lipohemarthrosis of the knee and to evaluate this
sign as criteria of intra-articular fracture...Conclusion: By showing
lipohemarthrosis in the subquadricipital recess, high-resolution
sonography is a reliable and accurate technique for the evaluation of
intra-articular knee fractures...
Conventional
radiography cannot replace CT scanning in detecting tibial tubercle
lateralisation
Frank-Christiaan B.M. Wagenaar, et al. - Because of the large
measurement error for axial CR, the study was terminated after seven
symptomatic knees. Positioning of the patient and markers, especially
the tibial tubercle marker, probably are important factors leading to
the large measurement error. Therefore, axial CR cannot replace CT to
detect a pathological tubercle trochlear groove distance...
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