Percutaneous Vertebroplasty: Relationship between Vertebral Body Bone Marrow Edema Pattern on MR Images and Initial Clinical Response

Radiology ◽  
2006 ◽  
Vol 239 (1) ◽  
pp. 195-200 ◽  
Author(s):  
Noboru Tanigawa ◽  
Atsushi Komemushi ◽  
Shuji Kariya ◽  
Hiroyuki Kojima ◽  
Yuzo Shomura ◽  
...  
Diagnostics ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1156
Author(s):  
Kang Hee Lee ◽  
Sang Tae Choi ◽  
Guen Young Lee ◽  
You Jung Ha ◽  
Sang-Il Choi

Axial spondyloarthritis (axSpA) is a chronic inflammatory disease of the sacroiliac joints. In this study, we develop a method for detecting bone marrow edema by magnetic resonance (MR) imaging of the sacroiliac joints and a deep-learning network. A total of 815 MR images of the sacroiliac joints were obtained from 60 patients diagnosed with axSpA and 19 healthy subjects. Gadolinium-enhanced fat-suppressed T1-weighted oblique coronal images were used for deep learning. Active sacroiliitis was defined as bone marrow edema, and the following processes were performed: setting the region of interest (ROI) and normalizing it to a size suitable for input to a deep-learning network, determining bone marrow edema using a convolutional-neural-network-based deep-learning network for individual MR images, and determining sacroiliac arthritis in subject examinations based on the classification results of individual MR images. About 70% of the patients and normal subjects were randomly selected for the training dataset, and the remaining 30% formed the test dataset. This process was repeated five times to calculate the average classification rate of the five-fold sets. The gradient-weighted class activation mapping method was used to validate the classification results. In the performance analysis of the ResNet18-based classification network for individual MR images, use of the ROI showed excellent detection performance of bone marrow edema with 93.55 ± 2.19% accuracy, 92.87 ± 1.27% recall, and 94.69 ± 3.03% precision. The overall performance was additionally improved using a median filter to reflect the context information. Finally, active sacroiliitis was diagnosed in individual subjects with 96.06 ± 2.83% accuracy, 100% recall, and 94.84 ± 3.73% precision. This is a pilot study to diagnose bone marrow edema by deep learning based on MR images, and the results suggest that MR analysis using deep learning can be a useful complementary means for clinicians to diagnose bone marrow edema.


Radiology ◽  
2000 ◽  
Vol 215 (3) ◽  
pp. 835-840 ◽  
Author(s):  
Marco Zanetti ◽  
Elisabeth Bruder ◽  
José Romero ◽  
Juerg Hodler

2014 ◽  
pp. 115-126 ◽  
Author(s):  
Lia Angela Moulopoulos ◽  
Vassilis Koutoulidis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sharat Agarwal

Dear Editor, At the outset, I would like to congratulate the authors of the article published in your journal in the current issue entitled- Idiopathic Transient Osteoporosis during Pregnancy – Report of a Clinical Case JOCR November – December 2019 Volume 9 Issue 6 Page 54-57. However, I regret to mention that the workup mentioned in this article needs to be improved, before one can come to definitive diagnosis of Idiopathic Transient Osteoporosis during Pregnancy. I would like to highlight various perspectives, issues & concerns, the knowledge of which are must for the readers of this journal pertaining to this disorder. It is pertinent to mention no doubt the increasing utilization of magnetic resonance imaging (MRI) has allowed physicians to investigate edematous changes in bone marrow, a clinically important entity which was previously undetected on conventional radiographs. The first use of the term “bone marrow edema” was by Wilson et al in 1988, and the term “bone marrow edema syndrome” was described in 1993 after the investigation of histological specimens [1]. Later on, importantly Hayes et al. advocated that the term “transient bone marrow edema syndrome” should be used for patients in whom the bone marrow edema pattern was not accompanied by radiographic evidence of osteopenia [2]. And thus separating the two entities i.e. “the transient bone marrow edema syndrome” and “Transient Osteoporosis” Occurrence of hip pain during pregnancy is quite common, although transient osteoporosis as a condition causing this symptom is uncommonly seen. Clinicians should also be aware of intra-articular disorders such as loose bodies, and labral tears; peri-articular pathology such as tendinitis and bursitis; or extra-articular conditions such as referred pain from the lumbar spine, the sacroiliac joint, and or from nerve entrapment syndromes. So, a detailed history and physical examination is helpful to narrow the differential diagnoses, which, in turn, dictate the modal


2000 ◽  
Vol 5 (5) ◽  
pp. 520-523 ◽  
Author(s):  
Toshikazu Kubo ◽  
Takuaki Yamamoto ◽  
Shigehiro Inoue ◽  
Motoyuki Horii ◽  
Keiichiro Ueshima ◽  
...  

Radiology ◽  
1999 ◽  
Vol 213 (3) ◽  
pp. 715-722 ◽  
Author(s):  
Kyung-Hoi Koo ◽  
In-Oak Ahn ◽  
Rokho Kim ◽  
Hae-Ryong Song ◽  
Soon-Taek Jeong ◽  
...  

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