[1] Nguyen Tat Thanh Univ, Dept Med Phys, Fac Med, Ho Chi Minh City, Vietnam
[2] Ho Chi Minh City Int Univ VNU HCM, Sch Biomed Engn, Ho Chi Minh City, Vietnam
[3] Vietnam Natl Univ Ho Chi Minh City, Ho Chi Minh City, Vietnam
[4] Bach Mai Hosp, Nucl Med & Oncol Ctr, Hanoi, Vietnam
[5] Prince Sattam Bin Abdulaziz Univ, Radiol & Med Imaging Dept, Coll Appl Med Sci, Al Kharj, Saudi Arabia
[6] Radiol Sci Dept, Coll Appl Med Sci, Al Hasa, Saudi Arabia
[7] King Saud bin Abdulaziz Univ Hlth Sci, Riyadh, Saudi Arabia
[8] Imam Abdulrahman Bin Faisal Univ, Dept Basic Sci, Deanship Preparatory Year & Supporting Studies, Dammam, Saudi Arabia
[9] Bushehr Univ Med Sci, Paramed Sch, Radiol Dept, Bushehr, Iran
[10] Sunway Univ, Appl Phys & Radiat Technol Grp, CCDCU, Subang Jaya, Malaysia
[11] Univ Surrey, Sch Math & Phys, Guildford, Surrey, England
[12] Univ Toronto, Dept Radiat Oncol, Toronto, ON, Canada
[13] Univ Hlth Network, Radiat Med Program, Princess Margaret Canc Ctr, Toronto, ON, Canada