A bunch of journals publish papers on the clinical aspects of nuclear medicine, however, much fewer ones would accept papers on the technical part. Here is a list on some of the potential targets.

Journal IF2019 IF2020 CAS Tier* JCR Quatile* Website Submission Comments
Nature Biomedical Engineering 17.135 25.671 T1 Q1 Nature BME Nature MTS  
Radiology 7.931 11.105 T1 Q1 Radiology ScholarOne Very few technological papers, clinical-oriented
IEEE Transactions on Medical Imaging 6.685 10.048 T1 Q1 IEEE TMI ScholarOne More algorithm fewer system paper.
Journal of Nuclear Medicine 7.887 10.057 T1 Q1 JNM JNM/JNMT  
European Journal of Nuclear Medicine and Molecular Imaging 7.081 9.236 T1 Q1 EJNMMI Editorial Manager  
Intl. J. Radiat. Oncol. Biol. Phys. 5.859 7.038 T2 Q1 Red Journal Editorial Manager ASTRO Red Journal, mostly RT, very few MI/NM papers.
NeuroImage 5.902 6.556 T2/1 Q1 NeuroImage Editorial Manager Brain Imaging
RadioGraphics 4.967 5.333 T2 Q1 RadioGraphics Editorial Manager Few NM/MI, clinical oriented
European Radiology 4.101 5.315 T2 Q1 Eur Radiol Editorial Manager Seldom publishes technological papers
Zeitschrift für Medizinische Physik 2.000 4.820 T3/4 Q3 ZMP Editorial Manager  
Molecular Imaging 2.763 4.488 T4 Q2 MIX ScholarOne  
IEEE Trans. Biomed. Eng. 4.424 4.538 T2 Q1 IEEE TBME ScholarOne Very few NM/MI papers.
Medical Physics 3.317 4.071 T3/2 Q1 Med Phys AAPM  
American Journal of Roentgenology 3.013 3.959 T2/3 Q2 AJR Editorial Manager Clinical-oriented
Quantitative Imaging in Medicine and Surgery 3.226 3.836 T2 Q2 QIMS   Clinical + some phycics
Strahlentherapie und Onkologie 2.899 3.621 T3/2 Q2 S.O. Editorial Manager  
Physics in Medicine & Biology 2.883 3.609 T3 Q2 PMB ScholarOne  
Molecular Imaging and Biology 2.925 3.488 T3/4 Q2 MIB Editorial Mananger Biochemical
EJNMMI Physics 2.574 3.309 T3 Q2 EJNMMI Phys Editorial Manager OA
J. Appl. Clin. Med. Phys.   2.102 T4 Q3 JACMP AAPM  
Physica Medica 2.485 2.685 T3 Q2 Physica Medica Editorial Manager European Journal of Medical Physics
BMC Medical Imaging 1.792 1.930 T4 Q3 BMC Medical Imaging SpringerNature  
IEEE Transactions on Nuclear Science 1.575 1.679 T1/2/3 Q2 IEEE TNS ScholarOne Fewer NM than before (to TRPMS).
Nuclear Instruments & Methods in Physics Research Section A 1.265 1.455 T3/4 Q3 NIMA Editorial Manager  
IEEE Transactions on Radiation and Plasma Medical Sciences N.A. N.A. N.A. N.A. IEEE TRPMS ScholarOne The first IF about to be announced, may be around 5.
Journal of Nuclear Medicine Technology N.A. N.A. N.A. N.A. JNMT JNM/JNMT Not currently indexed.