Abstract：
OBJECTIVE:To develop and validate a deep convolutional neural network (CNN) method capable of (1) selecting a specific shoulder sagittal MR image (Y-view) and (2) automatically segmenting rotator cuff (RC) muscles on a Y-view. We hypothesized a CNN approach can accurately perform both tasks compared with manual reference standards. MATERIAL AND METHODS:We created 2 models: model A for Y-view selection and model B for muscle segmentation. For model A, we manually selected shoulder sagittal T1 Y-views from 258 cases as ground truth to train a classification CNN (Keras/Tensorflow, Inception v3, 16 batch, 100 epochs, dropout 0.2, learning rate 0.001, RMSprop). A top-3 success rate evaluated model A on 100 internal and 50 external test cases. For model B, we manually segmented subscapularis, supraspinatus, and infraspinatus/teres minor on 1048 sagittal T1 Y-views. After histogram equalization and data augmentation, the model was trained from scratch (U-Net, 8 batch, 50 epochs, dropout 0.25, learning rate 0.0001, softmax). Dice (F1) score determined segmentation accuracy on 105 internal and 50 external test images. RESULTS:Model A showed top-3 accuracy > 98% to select an appropriate Y-view. Model B produced accurate RC muscle segmentations with mean Dice scores > 0.93. Individual muscle Dice scores on internal/external datasets were as follows: subscapularis 0.96/0.93, supraspinatus 0.97/0.96, and infraspinatus/teres minor 0.97/0.95. CONCLUSIONS:Our results show overall accurate Y-view selection and automated RC muscle segmentation using a combination of deep CNN algorithms.
journal_name
Skeletal Radioljournal_title
Skeletal radiologyauthors
Medina G,Buckless CG,Thomasson E,Oh LS,Torriani Mdoi
10.1007/s00256-020-03599-2subject
Has Abstractpub_date
2020-09-16 00:00:00eissn
0364-2348issn
1432-2161pii
10.1007/s00256-020-03599-2pub_type
杂志文章abstract：OBJECTIVE:Accurate insertion of a guidewire under image intensifier guidance is a fundamental skill required by orthopaedic surgeons. This study investigated how image intensifier distortion, which is composed of pin-cushion and sigmoidal components, changed the apparent trajectory of a guidewire, and the resulting dev...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-019-03171-7
更新日期：2019-09-01 00:00:00
abstract：:Spindle cell hemangioendothelioma occurring in skeletal muscle is extremely rare. No reported studies have performed an imaging evaluation of intramuscular spindle cell hemangioendothelioma. We report on such a tumor arising in an unusual site, the right extensor digiti minimi, in a 46-year-old woman. An en bloc resec...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050551
更新日期：1999-08-01 00:00:00
abstract：:The objective of this article was to offer a better characterization of the typical clinical presentation, radiologic findings, histology, treatment approaches, and differential diagnosis of cystic angiomatosis, a rare condition of which previous reports have been confusing because of unclear diagnostic criteria, diff...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s002560050082
更新日期：1996-04-01 00:00:00
abstract：OBJECTIVE:To describe the magnetic resonance appearance of posterosuperior labral peel back and determine the reliability of MR in the abducted and externally rotated (ABER) position for the prospective diagnosis of arthroscopically proven cases of posterosuperior labral peel back. METHODS:After approval by the instit...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-009-0744-4
更新日期：2010-01-01 00:00:00
abstract：:Two cases of osteogenic sarcoma with skeletal muscle metastases are described. A 40-year-old woman presented with progressive swelling of both calves and a soft tissue back lump. She had been diagnosed with mandibular chondroblastic osteogenic sarcoma 6 years earlier. Radiographs showed calcified masses. MRI scans and...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050521
更新日期：1999-05-01 00:00:00
abstract：:Association of cranial sclerosis with mixed osteopathia striata is a rate combination which has been proved recently to be an autosomal dominant entity. The present case, apparently sporadic in the kindred, records a further example of this association in a 27-year-old asymptomatic male. ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00347093
更新日期：1980-02-01 00:00:00
abstract：OBJECTIVE:To evaluate the magnetic resonance (MR) features of intramuscular myxoma (IM) compared with its pathological findings. DESIGN:Two radiologists retrospectively reviewed records and imaging studies of patients with histologically proven IM. Two radiologists also analyzed by consensus all the MR studies (pre- a...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-004-0848-9
更新日期：2005-01-01 00:00:00
abstract：:Four cases of osteoid osteomas are presented. An uncharacteristic magnetic resonance finding of soft tissue edema is reported. This observation should not be misinterpreted as indicating a more aggressive pathologic process and, thereby, exclude osteoid osteoma from the differential. ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00191523
更新日期：1993-01-01 00:00:00
abstract：:Forces and torques, due to a 0.3 Tesla magnetic field were evaluated on ten hip prostheses and ten hemostat clips. Measurements were performed with an instrument utilizing the movement of a laser beam caused by the deflection of a cantilever. The results indicate effects, if any, to be smaller than the instrument's se...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00355565
更新日期：1985-01-01 00:00:00
abstract：OBJECTIVE:To determine the accuracy of MR imaging for the evaluation of the subscapularis tendon as well as define imaging findings that will increase accuracy. MATERIALS AND METHODS:Retrospective review of the MR and operative (OR) reports of 286 patients was conducted and reviewed for the presence/degree (partial (P...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-013-1669-5
更新日期：2013-09-01 00:00:00
abstract：:Seventy patients with 72 conservatively treated tibial plateau fractures were re-examined after an average of 5 3/4 years. Among 55 fractured knees with a primary articular depression of 1-20 mm, the depression was still present radiographically in 47 knees. No correlation existed between the persistent radiographic d...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00367177
更新日期：1988-01-01 00:00:00
abstract：:We report the case of a 64-year-old man who initially presented with a maculopapular rash followed several weeks later by bilateral shin pain and infiltrative cutaneous lesions over the lower legs. The plain radiographs were not contributory, and the patient was referred for a whole-body bone scan, which demonstrated ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-009-0806-7
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVE:In diagnosing osteomyelitis (OM) both MRI and [18 F]FDG PET-CT proved to be accurate modalities. In anticipation of the advent of hybrid PET/MRI scanners we analyzed our patient group to give direction to future imaging strategies in patients with suspected OM. MATERIALS AND METHODS:In this retrospective stu...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-014-1844-3
更新日期：2014-05-01 00:00:00
abstract：OBJECTIVE:To investigate the MR findings of necrotic lesions and the extralesional area of osteonecrosis of the femoral head (ONFH) for each of the radiological stages. DESIGN AND PATIENTS:Forty-nine hips in 29 patients (15 female, 14 male; mean age 38 years, range 17-59 years) were imaged using a 1.0-T superconductin...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050583
更新日期：2000-03-01 00:00:00
abstract：OBJECTIVES:The objectives of this communication were to discuss radiographic and magnetic resonance (MR) imaging manifestations and clinical outcome after complete and incomplete resection of the mass of dysplasia epiphysealis hemimelica (DEH). MATERIALS AND METHODS:Clinical records, radiographs, and MR images of eigh...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-009-0803-x
更新日期：2010-01-01 00:00:00
abstract：:Liposarcoma is a relatively common soft tissue malignancy with a wide spectrum of clinical presentations and imaging appearances. Several subtypes are described, ranging from lesions nearly entirely composed of mature adipose tissue, to tumors with very sparse adipose elements. The imaging appearance of these fatty ma...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-003-0647-8
更新日期：2003-09-01 00:00:00
abstract：PURPOSE:To prospectively compare the diagnostic accuracy of diffusion-weighted whole body imaging with background whole body signal suppression (DWIBS) with skeletal scintigraphy for the diagnosis and differentiation of skeletal lesions in patients suffering from prostate or breast cancer. MATERIAL AND METHODS:A diagn...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-009-0789-4
更新日期：2010-04-01 00:00:00
abstract：:Chondroblastoma is a benign bone tumor that typically arises in the epiphysis of a long bone. However, when it occurs in non-epiphyseal location in flat bones, it may create a diagnostic problem. We describe such a case of chondroblastoma arising in the iliac bone. A 29-year-old man was incidentally found to have a bo...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-009-0833-4
更新日期：2010-06-01 00:00:00
abstract：:The authors present a case report and review of the sparse literature of a rare closed degloving injury to the toe, referred to by Flaherty as an "empty toe phenomenon." A 25-year-old man sustained a twisting injury to his left foot when he was involved in a motorcycle accident. The skin was not lacerated around the t...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-013-1690-8
更新日期：2014-01-01 00:00:00
abstract：:A painful or rigid subtalar joint is a common clinical problem. Computed tomography (CT) has been shown to be useful in evaluating tarsal coalition, but several other pathologic processes with a similar clinical presentation may affect the subtalar joint. Findings from 45 radiographically abnormal subtalar joints are ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF02569405
更新日期：1989-01-01 00:00:00
abstract：OBJECTIVE:A bone infarct may occasionally dedifferentiate to osteogenic sarcoma, fibrosarcoma or malignant fibrous histiocytoma. However, the association of an angiosarcoma with a bone infarct is extremely rare. Such an association is presented in three patients. Their clinical course is compared with that of patients ...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s002560050435
更新日期：1998-10-01 00:00:00
abstract：OBJECTIVE:Since the thickness of cartilage is an important indicator of the status, progression and response to therapy of articular disorders, assessment of it is desirable. This study was undertaken to assess the accuracy, precision, and reliability of magnetic resonance (MR) measurements of articular cartilage. MET...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00941240
更新日期：1995-08-01 00:00:00
abstract：:A 31-year-old woman presented with painful swelling in the right paravertebral region that had been present for 2 years. Radiography and CT revealed an area of increased density due to multiple calcifications localized at the fourth lumbar vertebra. Histological examination revealed that the lesion consisted of nodule...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050403
更新日期：1998-07-01 00:00:00
abstract：:A 15-year-old male presented with an 18-month history of increasing swelling on the radial aspect of his left forearm. Radiographs and MR images showed a partly calcified mass on the lateral border of the radius with erosion of the underlying cortex. Following a CT-guided needle biopsy, the mass was excised by segment...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560100347
更新日期：2001-05-01 00:00:00
abstract：:The cervical spine is the second most common location for manifestation of rheumatoid arthritis (RA). Symptoms are typically related to involvement of the craniocervical junction. Unfortunately, conventional radiographic examination is often unable to demonstrate that RA is the cause of such symptoms. Magnetic resonan...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00193087
更新日期：1990-01-01 00:00:00
abstract：:Herniation of the left peroneus longus muscle was present in three male members of the same family, being the first reported case of this condition in a familial setting. The hernias were differentiated from other mass lesions and varices by magnetic resonance imaging. The images demonstrated a fascial defect originat...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00204860
更新日期：1995-11-01 00:00:00
abstract：:Gout is the most common crystal-induced arthritis. Gouty tophi typically deposit in the extremities, especially toes and fingers. We present an unusual case of intrapelvic tophaceous gout in a patient suffering from chronic gouty arthritis. CT and MRI of the abdomen and pelvic cavity disclosed calcified gouty tophi ar...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-004-0827-1
更新日期：2005-04-01 00:00:00
abstract：OBJECTIVE:The transverse relaxation time (T2) in MR imaging has been identified as a potential biomarker of hyaline cartilage pathology. This study investigates whether MR assessments of T2 are comparable between 3-T scanners from three different vendors. DESIGN:Twelve subjects with symptoms of knee osteoarthritis and...
journal_title：Skeletal radiology
pub_type： 杂志文章,多中心研究
doi：10.1007/s00256-012-1511-5
更新日期：2013-04-01 00:00:00
abstract：:The posterolateral corner (PLC) is a complex functional unit, consisting of several structures, which is responsible for posterolateral stabilization. The PLC is not consistently defined in the literature. However, most descriptions include the popliteal tendon (PT), the lateral collateral ligament (LCL), the popliteo...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-006-0271-5
更新日期：2007-08-01 00:00:00
abstract：:Tuberculosis remains a major international health problem despite advances in radiological diagnosis and antituberculous therapy. Disseminated tuberculous infection affecting a single bone and manifested as multifocal lytic cortical lesions is rare and unusual. We report on a 50-year-old man with multifocal involvemen...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-003-0714-1
更新日期：2004-04-01 00:00:00
