This study aims to develop an abdominal acupoint localization system based on computer vision and convolutional neural networks (CNNs). To address the challenge of abdominal acupoint localization, a multi-task CNNs architecture was constructed and trained to locate the Shenque (CV8) and human body boundaries. Based on the identified Shenque (CV8), the system further deduces key characteristics of four acupoints: Shangwan (CV13), Qugu (CV2), and bilateral Daheng (SP15). An affine transformation matrix is applied to accurately map image coordinates to an acupoint template space, achieving precise localization of abdominal acupoints. Testing has verified that this system can accurately identify and locate abdominal acupoints in images. The development of this localization system provides technical support for TCM remote education, diagnostic assistance, and advanced TCM equipment, such as intelligent acupuncture robots, facilitating the standardization and intelligent advancement of acupuncture.
Acupuncture Points ; Humans ; Deep Learning ; Abdomen/diagnostic imaging* ; Neural Networks, Computer ; Acupuncture Therapy ; Image Processing, Computer-Assisted

Objective To explore the optimal parameters for virtual mono-energetic imaging of liver solid lesions. Methods A retrospective analysis was performed on 60 patients undergoing contrast-enhanced spectral CT of the abdomen.The iodine concentration values of hepatic arterial phase images and the CT values of different mono-energetic images were measured.The correlation coefficient and coefficient of variation were calculated. Results The average correlation coefficients between iodine concentrations and CT values of hepatic solid lesion images at 40,45,50,55,60,65,and 70 keV were 0.996,0.995,0.993,0.989,0.978,0.970,and 0.961,respectively.The correlation coefficients at 40(P=0.007),45(P=0.022),50 keV (P=0.035)were higher than that at 55 keV,and the correlation coefficients at 40 keV(P=0.134) and 45 keV(P=0.368) had no significant differences from that at 50 keV.The coefficients of variation of the CT values at 40,45,and 50 keV were 0.146,0.154,and 0.163,respectively. Conclusion The energy of 40 keV is optimal for virtual mono-energetic imaging of liver solid lesions in the late arterial phase,which is helpful for the diagnosis of liver diseases.
Humans ; Tomography, X-Ray Computed ; Retrospective Studies ; Abdomen ; Iodine ; Liver/diagnostic imaging* ; Signal-To-Noise Ratio ; Radiographic Image Interpretation, Computer-Assisted/methods*

Computed tomography (CT) is an imaging modality that provides otherwise unobtainable information in the diagnostic workup for acute abdomen. The patient's clinical history, physical examination, and laboratory findings are essential for a correct diagnosis; however, some diagnoses are difficult to establish. Although contrast-enhanced CT is the preferred diagnostic tool and provides invaluable information, using only post-contrast images can lead to misdiagnoses. Unenhanced CT images are more useful than post-contrast images for detecting high-attenuation lesions or materials because surrounding tissues also show high attenuation on post-contrast images. Unenhanced CT often provides key imaging findings for a correct diagnosis; hence, the purpose of this article is to describe CT findings in acute abdomen with high-attenuation lesions in the gastrointestinal tract.
Adult ; Humans ; Abdomen, Acute/diagnostic imaging* ; Contrast Media ; Tomography, X-Ray Computed/methods* ; Gastrointestinal Tract/diagnostic imaging* ; Retrospective Studies

Abdomen/diagnostic imaging* ; Artificial Intelligence ; Body Composition ; Magnetic Resonance Imaging ; Practice Guidelines as Topic

As a new type of magnetic resonance imaging method, amide proton transfer (APT) imaging can detect the chemical exchange characteristics of free proprotein, peptide amide proton and water proton by water signal changes, reflecting the changes of protein and pH in tissues. In recent years, clinical research on brain tumors, multiple sclerosis, hepatic encephalopathy and cervical cancer have been carried out. It is a radiation-free and non-invasive new magnetic resonance molecular imaging technology. This study briefly reviews the principle of APT technology and its clinical application, and prospects its application prospects in children's abdominal tumors.
Abdomen/pathology* ; Amides ; Child ; Humans ; Magnetic Resonance Imaging ; Neoplasms/diagnostic imaging* ; Protons

Objective To analyze the clinical features of Von-Hippel-Lindau(VHL)syndrome and explore the diagnostic value of abdominal ultrasound for this disease.Methods The clinical features including age at first diagnosis,symptoms,signs,affected organs,number of operations,and diagnostic examinations of 35 patients with VHL syndrome admitted to our center from January 1994 to December 2017 were retrospectively analyzed.The diagnostic value of abdominal ultrasound for VHL syndrome was analyzed.Results Pheochromocytoma(=14)and nervous system hemangioblastoma(=13)were the common firstly-identified tumors.Nervous system hemangioblastoma(=21),pheochromocytoma(=19),renal carcinoma(=17),and pancreatic mass(=15)were common tumors.The main surgical reasons were nervous system hemangioblastoma(=22),pheochromocytoma(=23)and renal carcinoma(=13).Abdominal organ involvements were found in 33 patients,which were first detected by abdominal ultrasound in 20 patients and were found accidently during routine health checkups in 6 patients.The ultrasound results were accurate in 27 of 33 adrenal gland scans,13 of 16 pancreas scans,and 8 of 19 kidney scans.Conclusions When multiple tumors are detected in the kidney,adrenal gland,and pancreas by ultrasound,the possibility of VHL syndrome should be considered.When the clinical findings suggest the possibility of VHL syndrome,ultrasound can discover and diagnose the abdominal tumors and can also be used for the long-term follow-up of the tumors.Therefore,ultrasound is an important method in the screening and follow-up of patients with VHL syndrome.
Abdomen ; diagnostic imaging ; Adrenal Gland Neoplasms ; diagnostic imaging ; Hemangioblastoma ; diagnostic imaging ; Humans ; Pheochromocytoma ; diagnostic imaging ; Retrospective Studies ; Ultrasonography ; von Hippel-Lindau Disease ; complications ; diagnostic imaging

Both malignant tumors derived from gastrointestinal tract and metastasis from peritoneal spread, hematogenous dissemination and lymph node can lead to acute abdomen. Such acute abdomen patients have poor prognosis, high mortality, and complex clinical manifestations. It is difficult to make a correct diagnosis in clinical practice. Recent studies show that gastrointestinal tumors are associated with clinical emergency. Malignant gastrointestinal tumors mostly result in obstruction, so upper gastrointestinal contrast for gastric cancer and post-enhanced CT for colon cancer are recommended; gastrointestinal stromal tumors usually cause bleeding, so computed tomography angiography (CTA) is the first choice for examination; primary gastrointestinal lymphoma tends to cause perforation and usually occurs in small intestine, so CT is the first examination for patients with ischemic acute abdomen, and post-enhanced CT is essential to exclude small intestine carcinoid because of its rising incidence in recent years. The possibility of gastrointestinal metastasis should be kept in mind for patients with cancer presenting acute abdomen. This article focuses on the imaging features of common gastrointestinal tumors and their acute obstruction, perforation, and hemorrhage, and aims to improve the understanding of such symptoms in clinical practice so that correct diagnosis and treatment can be made in time.
Abdomen, Acute ; diagnostic imaging ; Carcinoid Tumor ; diagnostic imaging ; Gastrointestinal Stromal Tumors ; diagnostic imaging ; Humans ; Intestinal Neoplasms ; diagnostic imaging ; Intestines ; diagnostic imaging

A dog with a history of diarrhea and dyschezia exhibited an oval-shaped, soft-tissue opacity mass in the abdomen on radiographs. CT examination revealed a large fluid-filled structure displacing the urinary bladder, prostate, and colon. The mass had continuity with the prostate; therefore, it was tentatively diagnosed as a paraprostatic cyst. Cytologic examination was performed and the mass was considered a non-inflammatory cyst. However, after surgery, histopathologic examination revealed a necrotic, inflamed cystic lipoma. This case shows that unusual intra-abdominal lipomas may have a cystic appearance.
Abdomen ; Animals ; Colon ; Constipation ; Diagnostic Imaging ; Diarrhea ; Dogs ; Lipoma* ; Prostate ; Urinary Bladder

Hemangiomas are the most common benign tumors of the liver. They are generally asymptomatic, but giant hemangiomas can lead to abdominal discomfort, bleeding, or obstructive symptoms. Kasabach-Merritt syndrome is a rare but life-threatening complication of hemangioma, characterized by consumptive coagulopathy with large vascular tumors. More than 80% of Kasabach-Merritt syndrome cases occur within the first year of life. However, there are few reports of Kasabach-Merritt syndrome with giant hepatic hemangioma in adults and, as far as we know, no reports of Kasabach-Merritt syndrome with hepatic hemangioma treated with first line medical treatment only. The most important treatment for this syndrome is removal of the large vascular tumor. However, surgical treatment entails risk of bleeding, and the patient's condition can mitigate against surgery. We herein present a case of unresectable giant hepatic hemangioma with disseminated intravascular coagulopathy. The patient was a 60-year-old woman who complained of hematochezia, ecchymosis, and abdominal distension. She refused all surgical management and was therefore treated with systemic glucocorticoids and beta-blockers. After two weeks of steroid therapy, she responded partially to the treatment. Her laboratory findings and hematochezia improved. She was discharged on hospital day 33 and observed without signs of bleeding for three months.
Abdomen/diagnostic imaging ; Ecchymosis/etiology ; Female ; Gastrointestinal Hemorrhage/etiology ; Hemangioma/complications/*diagnosis ; Humans ; Kasabach-Merritt Syndrome/complications/*diagnosis/drug therapy ; Middle Aged ; Prednisone/therapeutic use ; Propranolol/therapeutic use ; Tomography, X-Ray Computed

Proctitis is an inflammatory change of rectal mucosa induced by various agents or stimulus. Among many etiologies, it may be caused by medical treatments such as radiation or antibiotics. Proctitis usually presents with rectal ulcer but abscess formation is uncommon. Therapy using Ssukjwahun exerts its effect by directly applying the smoke around genital area and anus with various medicinal brewed herbs, especially worm-wood. Secondary metabolite of this plant, monoterpene, is known to facilitate circulation, exert anti-inflammatory effect, and help control pain. Herein, we report an unusual case of infectious proctitis presenting with rectal ulcer and abscess formation after perianal application of warm steam made by Artemisia asiatica smoke for treatment of dysmenorrhea.
Abdomen/diagnostic imaging ; Abscess/*diagnosis ; Adult ; Artemisia/*chemistry/metabolism ; Female ; Humans ; Proctitis/*diagnosis/etiology ; Rectum/diagnostic imaging ; Sigmoidoscopy ; Smoke/*adverse effects ; Tomography, X-Ray Computed ; Ultrasonography