Publications by authors named "M Takahagi"
Computed Tomography-guided Puncture: Preprocedural Preparation, Technical Tips, and Radioprotection.
Interv Radiol (Higashimatsuyama)
November 2024
Computed tomography-guided puncture is a useful technique for various interventional radiology procedures. Puncture from various locations and angles becomes possible using this technique. Moreover, bone and air do not interfere with the computed tomography image.
View Article and Find Full Text PDFPurpose: We aim to evaluate retrospectively the feasibility, safety, and initial therapeutic outcomes of radiofrequency ablation combined with hepatic artery embolization using a tris-acryl gelatin microsphere for colorectal liver metastases.
Material And Methods: Six consecutive patients (4 men and 2 women) with median age of 68 years (range 57-78 years) underwent computed tomography fluoroscopy-guided radiofrequency ablation immediately after hepatic artery embolization using microspheres. This study evaluated tumor visibility on noncontrast-enhanced computed tomography immediately after hepatic artery embolization; analyzed local tumor progression; defined technical success as the coverage of the tumor by the ablative zone; and assessed adverse events based on Common Terminology Criteria for Adverse Events v5.
Untangling a Knotted Angiographic Catheter Using a Balloon Catheter: A Case Report.
Interv Radiol (Higashimatsuyama)
July 2023
Article Synopsis
- A 66-year-old man with liver cancer had a catheter inserted for an angiographic exam, but it became tightly knotted in his descending aorta.
- To resolve this issue, a noncompliant balloon catheter was introduced from the other femoral artery and inflated inside the knotted loop.
- This inflation loosened the knot, allowing the original catheter to be untangled, and the angiographic examination continued as planned.
Background/aim: To evaluate retrospectively whether bland embolization using microspheres is safe and useful for relieving pain in patients with painful malignant musculoskeletal (MSK) tumors.
Patients And Methods: Bland embolization using microspheres was performed for 20 patients (11 women/9 men) with a median age of 69 years (range=40-89 years) who had 22 painful malignant MSK tumors. The maximum tumor diameters were 2.
Purpose: To evaluate, experimentally and clinically, the radioprotective effects of a semicircular X-ray shielding device for operators during CT fluoroscopy-guided IR procedures.
Materials And Methods: During experimentation, the reduction rates of scattered radiation rates from CT fluoroscopy were evaluated using a humanoid phantom. Two shielding device positions were tested: "shielding close to the CT gantry" and "shielding close to the operator".