RT Journal Article SR Electronic T1 Choose Your Collimator Wisely: Inappropriate Collimator Selection During a 177Lu-DOTATATE Posttreatment Scan JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP jnmt.123.266807 DO 10.2967/jnmt.123.266807 A1 Peacock, Justin G. A1 Young, Taylor S. YR 2023 UL http://tech.snmjournals.org/content/early/2023/12/12/jnmt.123.266807.abstract AB Proper collimator selection is critical to obtaining high-quality, interpretable nuclear medicine images. Collimators help eliminate scatter, which leads to poor spatial resolution and blurry images. We present the case of a posttherapy 177Lu-DOTATATE (Lutathera) patient who was initially imaged with a low-energy, high-resolution collimator routinely used in 99mTc imaging. On image review, the patient was reimaged with the appropriate medium-energy, high-resolution collimator, which resulted in improved image quality. When reviewing the quality of images, it is important to understand modifications to the imaging that can significantly improve image quality and interpretation.