Professional background

Dr Pei Lim graduated from the University of Southampton in 2009. She was awarded the masters in oncology higher degree in 2016 and completed her clinical oncology training at UCLH in 2018. She took up a junior radiation oncologist position for 12 months at the Centre for Proton Therapy, Paul Scherrer Institute in Switzerland specialising in the pencil beam scanning delivery technique. She has been working as a consultant clinical oncologist at UCLH since 2020 focusing on radiotherapy for paediatric tumours and radionuclide therapy.

Her specialist interests include advanced radiotherapy techniques particularly proton beam therapy, management of childhood cancers with radiotherapy and molecular radiotherapy.

Research interests

Dr Pei Lim has a strong interest in the field of proton beam therapy. She is currently completing her MD(Res) research degree investigating the benefits and challenges of proton beam therapy in children, teenage and young adults. Her particular research focus is in developing strategies to manage the uncertainties of proton therapy in the abdominal region for children.

Languages spoken



Lim PS, Tran S, Kroeze SGC, Pica A, Hrbacek J, Bachtiary B, Walser M, Leiser D, Lomax AJ, Weber DC. Outcomes of adolescents and young adults treated for brain and skull base tumors with pencil beam scanning proton therapy. Pediatr Blood Cancer. 2020 Dec;67(12):e28664. https://doi.10.1002/pbc.28664.

Lim PS, Rompokos V, Bizzocchi N, Gillies C, Gosling A, Royle G, Chang YC, Gaze MN, Gains JE. Pencil Beam Scanning Proton Therapy Case Selection for Paediatric Abdominal Neuroblastoma: Effects of Tumour Location and Bowel Gas. Clin Oncol (R Coll Radiol). 2020 Sep 19. https://doi.10.1016/j.clon.2020.08.012.

S. Tran, P. Lim, B. Bojazhiu, C. Teske, K. Baust, S. Zepter, U. Kliebsch, B. Timmermann, G. Calaminus, D.C. Weber. Clinical outcomes and quality of life in children and adolescents with primary brain tumors treated with pencil beam scanning proton therapy. Paediatric Blood & Cancer Pediatr Blood Cancer. 2020; 67:e28465.

P.S. Lim, A. Pica, J. Hrbacek, M. Walser, B. Bachtiary, A. Lomax, D. Weber Pencil Beam Scanning Proton Therapy for Paediatric Neuroblastoma with Motion Mitigation Strategy for moving Target Volumes. Clinical Oncology [Epub ahead of print, available online Feb 2020].

D.C. Weber, C. Grau, P.S. Lim, D. Georg, Y. Lievens. Bringing Europe together in building clinical evidence for proton therapy – the EPTN-ESTRO-EORTC endeavor. Acta Oncol. 2019 Jun 26:1-3. Doi: 10.1080/0284186X.2019.1624820.

D.C. Weber, P.S. Lim, S. Tran, M. Walser, A. Bolsi, U. Kliebsch, J. Beer, B. Bachtiary, T. Lomax, A. Pica. Proton therapy for brain tumours in the area of evidence-based medicine. Br J Radiol. 2019 May 20:20190237. Doi: 10.1259/bjr.20190237.

P.S. Lim and P. Hoskin. Chapter III Bone Metastases in “Handbook of Palliative Radiation Therapy”, Springer 2017. Editors: Candice Johnstone, Stephen Lutz.

 P.S. Lim and P. Hoskin. Chapter 19 Prostate Brachytherapy: Low dose Rate Instertitial in “Brachytherapy: Principles and Practice: An International Perspective”, Springer 2016. Editors: Paolo Montemanggi, Mark Trombetta, Luther W Brady.