Tag Archives: image guidance

Radiotherapy Planning Imaging
4
Feb

Overview

Imaging is central to radiotherapy planning target delineation and dose calculation. CT is the primary modality for planning with MRI and PET providing complementary information. Accurate imaging improves treatment precision.

Simulation and Planning

CT simulation acquires patient geometry for dose calculation and immobilization. MRI and PET coregistration refine target definition and spare normal tissues. Motion management addresses respiratory and organ motion.

Image Guidance

Image guided radiotherapy uses imaging at delivery to verify patient position. Cone beam CT and portal imaging ensure accurate targeting. Adaptive radiotherapy adjusts plans based on imaging changes.

Quality Assurance

Imaging quality and registration accuracy are essential for safe radiotherapy. Multidisciplinary collaboration ensures appropriate imaging protocols. Ongoing verification and audits maintain standards.

Biopsy Needle
4
Feb

Overview

Biopsy needles obtain tissue samples under imaging guidance for histologic diagnosis. Needle type gauge and technique are chosen based on lesion location and suspected pathology. Imaging guidance improves targeting and reduces complications.

Needle Types

Core biopsy needles fine needle aspiration and vacuum assisted devices serve different diagnostic needs. Gauge selection balances sample adequacy and bleeding risk. Specialized needles exist for bone liver and lung biopsies.

Imaging Guidance

Ultrasound CT and MRI guide needle placement for accuracy and safety. Real time imaging reduces risk to adjacent structures and improves yield. Post procedure imaging documents complications and sample location.

Sterility and Handling

Sterile technique and single use disposables reduce infection risk. Proper labeling and transport of specimens ensure diagnostic integrity. Training in technique and complication management is essential.